What material are these Manley valves made from?

These intake valves are constructed from NK-842 stainless steel. This material is chosen for its strength and ability to withstand high temperatures common in performance engines.

What is the benefit of the swirl polished and fully machined design?

The swirl polished under head areas and fully machined combustion faces are designed to create a smoother path for air entering the cylinder. This can help improve airflow efficiency into the combustion chamber.

Are these valves suitable for all RB26DETT engines?

These Manley Race Series valves are specifically designed for the RB26DETT and are recommended for engines operating under 8000 RPM. Always confirm fitment for your specific engine build.

Specifications

Brand: Manley Performance
Part #: 11162-12
UPC: 807298002095

Manley Nissan 2.6L Inline 6-24 Valve (RB26DET/T) Intake 34.6mm Stainless Race Flo Valves

Name: Manley Nissan 2.6L Inline 6-24 Valve (RB26DET/T) Intake 34.6mm Stainless Race Flo Valves
Brand: Manley Performance
SKU: manley-performance-manley-nissan-2-6l-inline-6-24-valve-rb26det-t-intake-34-6mm--t14-252897
Price: 344.59 USD
Availability: BackOrder

$344.59

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Manley RB26DETT 34.6mm stainless steel intake valves. Optimized for airflow and durability.

Key Features

These are intake valves for the Nissan 2.6L Inline 6-24 Valve (RB26DET/T) engine.
Constructed from NK-842 stainless steel for durability and heat resistance.
Features a 34.6mm diameter and Race Flo shape to optimize airflow.
Swirl polished under head areas and fully machined combustion faces help smooth airflow.
Chrome stems and hard tips are included for enhanced wear resistance and longevity.
Manley Race Series valves are suitable for engines operating under 8000 RPM.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

These Manley Race Series intake valves are made from NK-842 stainless steel, a material chosen for its strength and resistance to heat, making them a solid choice for your Nissan RB26DETT engine. The 34.6mm diameter is specific to the RB26, and the Race Flo shape is designed to help improve airflow into the combustion chamber, especially in engines that will see higher RPMs. You'll find the under-head area is swirl polished and the entire valve is fully machined, which helps smooth the path for air entering the cylinder.

Beyond the material and shape, these valves also feature chrome stems and hard tips. This treatment adds a layer of wear resistance, which is important for valve longevity, especially if you plan on running your engine hard. While these are intake valves, Manley notes that their exhaust counterparts are recommended for alcohol-fueled engines, hinting at the robust nature of this Race Series line for demanding applications.